﻿Oh'gochceta 
  of 
  Travancore. 
  491) 
  

  

  Number 
  of 
  setse 
  nearly 
  constant 
  in 
  each 
  segment, 
  about 
  24, 
  

   both 
  at 
  the 
  anterior 
  and 
  at 
  the 
  middle 
  and 
  posterior 
  regions. 
  

   The 
  circles 
  of 
  seise 
  are 
  regularly 
  but 
  not 
  broadly 
  interrupted 
  

   ventral 
  Iy 
  (aa 
  = 
  2 
  ab) 
  ; 
  dorsally 
  the 
  setse 
  are 
  a 
  little 
  more 
  

   distant. 
  

  

  Clitellum 
  developed 
  all 
  round 
  the 
  body 
  and 
  occupying 
  

   segments 
  xiv.-xvii. 
  

  

  First 
  dorsal 
  pore 
  on 
  intersegmental 
  furrow 
  viii.-ix. 
  

  

  On 
  intersegmental 
  furrows 
  (?ii.-iii.) 
  iii.-iv. 
  — 
  viii.-ix. 
  is 
  

   found 
  a 
  pair 
  of 
  little 
  nephridial 
  pores, 
  in 
  the 
  lines 
  of 
  setse 
  e. 
  

  

  In 
  the 
  middle 
  ventral 
  region 
  of 
  the 
  xviii. 
  segment 
  there 
  

   are 
  a 
  few 
  large, 
  but 
  well-marked 
  triangular 
  papilla?, 
  which 
  

   enclose 
  a 
  little 
  triangular 
  area 
  (PI. 
  XIII. 
  fig. 
  5). 
  One 
  of 
  the 
  

   angles 
  of 
  the 
  papilla 
  is 
  directed 
  forwards 
  and 
  extended 
  on 
  

   the 
  posterior 
  margin 
  of 
  the 
  xvii. 
  segment. 
  Other 
  angles 
  are 
  

   lateral, 
  and 
  near 
  them 
  are 
  found 
  the 
  male 
  pores, 
  in 
  the 
  lines 
  

   of 
  setse 
  b. 
  

  

  Spermathecal 
  pores 
  two 
  pairs, 
  on 
  intersegmental 
  furrows 
  

   vii.— 
  viii. 
  and 
  viii.-ix., 
  in 
  the 
  lines 
  of 
  setse 
  b. 
  

  

  Internal 
  anatomy. 
  — 
  Septa 
  vi.-vii. 
  — 
  ix.— 
  x. 
  moderately 
  

   thickened. 
  

  

  A 
  gizzard 
  in 
  the 
  v. 
  segment. 
  The 
  oesophagus 
  is 
  irregu- 
  

   larly 
  swollen 
  in 
  segments 
  xv.— 
  xx., 
  but 
  is 
  not 
  provided 
  with 
  

   calciferous 
  glands. 
  The 
  wide 
  intestine 
  suddenly 
  begins 
  in 
  

   the 
  xxi. 
  segment. 
  Last 
  hearts 
  in 
  the 
  xiii. 
  segment. 
  

  

  On 
  segments 
  iii.-ix. 
  is 
  found 
  respectively 
  a 
  pair 
  of 
  large 
  

   nephridia. 
  These 
  organs 
  consist 
  of 
  a 
  proximal 
  portion, 
  from 
  

   which 
  originates 
  a 
  thin-walled 
  ribbon-like 
  duct, 
  which 
  in- 
  

   creases 
  in 
  length 
  from 
  the 
  first 
  to 
  the 
  seventh 
  pair 
  of 
  

   nephridia 
  and 
  passes 
  through 
  the 
  body-wall 
  at 
  the 
  extreme 
  

   anterior 
  margin 
  of 
  each 
  segment. 
  The 
  proximal 
  portion 
  of 
  

   these 
  meganephridia 
  is 
  conspicuous, 
  and 
  consists 
  of 
  a 
  tuft 
  of 
  

   very 
  thin 
  whitish 
  filaments, 
  each 
  of 
  which 
  contains 
  a 
  long 
  

   strip 
  of 
  nephridial 
  tubule. 
  

  

  From 
  the 
  x. 
  segment 
  the 
  nephridia 
  are 
  diffused 
  and 
  very 
  

   small, 
  but 
  on 
  the 
  xiv. 
  and 
  xv. 
  segments, 
  on 
  each 
  side 
  of 
  the 
  

   oesophagus, 
  is 
  found 
  a 
  pair 
  of 
  meganephridia 
  (besides 
  the 
  

   small 
  micronephridia) 
  which 
  are 
  similar 
  to 
  those 
  of 
  segments 
  

   iii.-ix. 
  

  

  Testes 
  and 
  sperm-duct-funnels 
  free 
  in 
  the 
  x. 
  and 
  xi. 
  seg- 
  

   ments. 
  Two 
  pairs 
  of 
  grape-like 
  sperm-sacs 
  lie 
  in 
  segments 
  xi. 
  

   and 
  xii., 
  depending 
  from 
  the 
  anterior 
  septum. 
  

  

  The 
  glandular 
  part 
  of 
  the 
  prostates 
  is 
  much 
  lobed 
  and 
  

   extended 
  into 
  segments 
  xvii.-xx. 
  The 
  muscular 
  duct 
  of 
  

   each 
  prostate 
  lies 
  in 
  the 
  xviii. 
  segment, 
  in 
  which 
  it 
  describes 
  

   a 
  curve 
  towards 
  the 
  middle 
  ventral 
  line, 
  from 
  the 
  anterior 
  

  

  